题解 | #记负均正II#

negativeNum = positiveNum = positiveTotal = 0
while True:
    try:
        num = int(input())
    except EOFError:
        break
    if num < 0:
        negativeNum += 1
    else:
        positiveNum += 1
        positiveTotal += num

print(negativeNum)
print(round(positiveTotal / positiveNum if positiveNum else 0.0, 1))